Side-by-side specifications of the Synology DS1019+ and DS1515+, from official datasheets. Differences are highlighted.
| DS1019+ | DS1515+ | |
| CPU | Intel Celeron J3455 | Intel Atom C2538 |
| Cores / threads | 4 cores / 4 threads | 4 cores / 4 threads |
| RAM (base) | 8 GB DDR3L non-ECC | 2 GB DDR3 |
| RAM (max) | 8 GB | 6 GB |
| Drive bays | 5 | 5 |
| Expandable to | 5 | 10 (with DX513) |
| M.2 slots | 2 M.2 2280 NVMe | 0 |
| Network | 2 x 1GbE RJ-45 | 4 x Gigabit |
| 10GbE | no | no |
| Max raw capacity | 60 TB internal raw; 10 drives with DX517 | 30 TB internal; 90 TB with DX513 expansion |
| Hot-swap | yes | yes |
| Form factor | Desktop | Desktop |
| Released | 2019 | 2015 |
| Power consumption | 38.59 W / 13.32 W | 72.5 W / 18.4 W |
| DSM at launch | — | — |